Just replaced my laptop screen, screen is black? [Closed]

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Tuesday June 25, 2013
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Tuesday March 19, 2013
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June 10, 2015
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Well my laptop screen broke about 3 months ago and I've been using an external monitor ever since. Just now, I finally got a replacement screen for my laptop. Anyways, Initially when I was using the external monitor, the screen on the laptop would be glowing as well. Then after a while I believe it stopped. When I replaced my laptop screen (I followed the procedure correctly from a video on youtube), the new screen was black even though the laptop was on and functioning. I then connected it back to my external monitor and it was still working fine. I then took the screen a part again, made sure I connected the video cable properly and tried it again. Didn't work. I tried taking out the battery and power cable out, holding down the power button for a minute, and turning it back on 3 times. Didn't work. I then took out my ram cards, left them out for a while, then but them back in (changing their slots) and it still didn't work. I then tried to start up the machine with only one ram card in, nothing. I then ran a windows memory diagnostic to see if there was any problem with the ram, and it reported no problems whatsoever. I then went and installed the latest display drivers for my graphics chipset, still no luck.

I'm really out of options here and have no idea what's causing the problem. There is no inverter since it's an LED screen. I also put a flashlight on it and there is no image on the screen when the laptop is turned on. My best guess is that there's something faulty with the connection from the display to the laptop (whether it's the cable or some connector) since the computer doesn't detect any built in display.

I'm stumped. Suggestions are much appreciated.

The model is an HP Pavilion G6 with an AMD A6 3400M APU.

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Tuesday March 19, 2013
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Hook up an external monitor to the laptop. This will bypass the inverter and screen altogether and tell you whether or not the screen is the issue.

If you get a display on the external monitor, you know the computer is operating properly and that it is either the backlight or the LCD that is the problem.

If you get no display on the external monitor, you know that it is something wrong with the motherboard or other device.

Just make sure you use the hotkey on the laptop to enable the output to the external monitor.